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(NOMOM') G. W. BALDRIGB su G. H. LASAR'.

EYSCAPEMENT FOR TYPE WRITERS. No. 344,933. Pantented July 6, 1886.

N. PETERS. Pnmumowpher. wmngwn. n c.

Unire @rares Paritair @WWE GEORGE VVT. BALDRIGE AND GODFREYl H. LASAR, 0F STfLOUlS, MISSOURI;v

`SAID LASAR ASSIGNOR TO SAID BALDRIGE.

ESCAPEMENT FOR TYPEJW'RETERS.

SPECIFICATION forming part of Letters Patent No. 344,933, dated July 6, 1886.

Original application filed March 17, 11585, Serial No. 159,233. No. 1823.206.

.To all whom it may concern:

Be it known that we, GEORGE NV. BALI)` Rien and GODFREY H. LAsAR, of St. Louis, Missouri, have jointly made a new and useful Improvement in Escapements, of which the following is atull, clear, and exact description.

The present improvement was shown in our pending application for Yan improvement in typewriters, tiled March 17,1885, and numbei-ed 159,233, and by direction oi' the Patent Ofce is now presented in a separate application. Y

rlhe annexed drawings, making part of this specification, is largely a reproduction of that already exhibited in the application referred to.

Figure l is a view in perspective showing separated from each other the various parts of the improved escapement. Fig. 2 is avertical section on the line 2 2 of Fig. 4. Fig. 3 is a view similar to that of Fig. 2, the dogl plate being raised. Fig. 4 is an edge clevation, partly in section, of the escapenient; and Figs. 5, 6, and 7 are details showing the mechanism for removing the lower dog from the plane of the scape-wheel, Figs. 5, 6 being plan views, and Fig. 7 being a section on the line 7 7 of Fig. 6.

rlhe saine letters of reference denote the same parts.

N, Figs. 1, 4, represents a gear-wheel, and Nl represents a coilspring. The gcarN is journaled upon the bolt Nwhich passes through the liub n of the gear, and is screwed into the part A* at n. The part Ais any suitable support for the escapement mechanism. The spring N encircles the bolt between the gear N and the part A, the inner end of the spring being fastened to the bolt, and the outer end of the spring being fastened to the gear, or to some partsuch as the casing N4attached to the gear. The gear N engages with the papercarriage rack, or any other part having rectilinear or rotary motion. The movement ol such part in one direction operates to wind up the spring, and when the gear is released the spring actsto rotateit in the opposite direction. The hub n is extended, and forms a bearing, upon which the scape-wheel N3 is fastened H represents what may be styled the scapeplate It is slotted vertically at 7L, and it is arranged be- Divideil and this application tiled December 9, 1885. Serial (No model.)

tween the scape-wheel and the gear N. The slotn is large enough for the scape-plate to be passed onto the hub n. and it is suiiiciently elongated vertically to enable the scape-plate to be lifted and lowered in the manner and for the purpose presently described. The bolt Nl when in place, as in Fig. 4, is rigidly fixed; but it does not bind the gear N, the scapewlieel, and the scape-plate in their respective inovernentsmthat is, the gear and the scape` wheel can as one part rotate reciprocatingly upon the bolt, andthe scape-plate can be moved reciprocatingly upward and downward between the gear and the scape-wheelrEhe scape-plate is supplied with the two dogs, h and h2, which are designed to work in connection with the scape wheel. They are arranged upon the plate to be one 7L above, and the other, h2, beneath, the center ot the scape\vlieel, and they point in opposite directions. rlhe scape-wheel is at rest when in the down position of the scape-plate, as in Fig. 2, in which position the dog 7L is in engagement with the scapewheel. Vhen the plate is moved upward, the upper dog becomes disengaged, and the lower dog becomes engagedgyith the scape-wheel, and the spring N acts to rotate the gear N and scapcwheel a distance equal to that of the movement ofthe point of the lower dog; for while the upper dog is fixed upon the scapeplate the lower dog is pivoted thereupon, and it is turned to and fro upon its pivot, as indicated by its two positions shown in Figs. 3 and 2, respectively, and when the scape-wheel engages with that dog 71.2 the dog moves with the scape-wheel until the dog encounters the stop if, whereupon the further movement of the dog and scape-wheel is prevented. Vhen the scapeplate is moved downward, and the dog 7i2 disengaged therefrom, the spring It* acts to turn the dog on its pivot back into the position of Fig. 2. As the dog h2 becomes disengaged,the dog 71. becomes engaged with the scape-wheel, and the scape-wheel is again held stationary until the scape-plate is moved upward again. The scape-plate can be moved, in the manner described, by any suitable means, as, for in` stance, the connecting-rod O. When it is desired to rotate the gear N independently of the escapeinent, the scape-plate is lifted to dis- IOO engage the upper dog7 and the lower dog is removed from the plane of the scape-Wheel, and preferably by the following means: A thrust-bar, O, is adapted to be moved longitudinally in the guide O12 upon the scape-plate. The thrust-bar is beveled at O13, and is slotted at O14, to be slipped upon the pivot h5 of the dog h2,` and so that the extreme end of the thrust-bar comes between the hub h ofthe dog and the scape-plate, as shown more distinctly in Fig. 5. By thrusting the bar Ou forward its beveled portion operates to wedge the dog away from the scape-plate and out of the plane of the scape-wheel, and the parts assume the position of Figs. 6, 7. The pivot h5 is extended outward from the scape-plate, and is encircled by the spring O,which at its outer end bears against the shoulder O25, and its inner .end against the end h, and when the thrust-bar is withdrawn the spring acts to replace the dog h2 in the plane of the scape-wheel; but aslong as the dog h is disengaged and the dog h2 is withdrawn laterally, as deseribed,the gear and scape-wheel can be rotated freely.

We claim- 1. The combination of the gear N, hub n, bolt N, scape-wheel N3, and scape-plate H, slotted at h and provided with the dogs la h2,

substantially as described.

described.

GEO. W. BALDRIGE. GODFREY H. LASAR. Witnesses:

C. D. MOODY, J. W. HOKE. 

